Toro 74901 - Brake Maintenance; Adjusting the Parking Brake

BrakeMaintenance
AdjustingtheParkingBrake
ServiceInterval:Aftertherst100hours
Every500hours
DANGER
Mechanicalorhydraulicjacksmayfailtosupport
machineandcauseaseriousinjury.
•Usejackstandwhensupportingmachine.
•Donotusehydraulicjacks.
Checktomakesurethebrakeisadjustedproperly.
1.Drivethemachineontoalevelsurface.
2.Disengagethebladecontrolswitch(PTO),movethe
motioncontrolleverstotheneutrallockedposition
andsettheparkingbrake.
3.Stoptheengine,waitforallthemovingpartstostop,
andremovethekey.
4.Raisethebackofthemachineupandsupportthe
machinewithjackstands.
5.Removethereartiresfromthemachine.
6.Removeanydebrisfromthebrakearea.
7.Openthedrivewheelreleasevalves.RefertoUsing
theDriveWheelValvesinOperation.
8.Disengagetheparkingbrake.
9.Usinghandsandngersonly,pushthecaliperlever
armtoengagethebrakepadsontherotoruntilthe
leverstops(
Figure74).
Notetheorderofthestandardnutandlocknut.
10.Whileholdingtheleveratthestoppedposition,use
theotherhandorngerstopullthecablethreaded
endtightthroughtheswivel.Spinthestandardnut
againsttheswivel(
Figure74).
11.Trytoturnthewheelhubinbothdirectionsrelative
tothecaliper.Thereshouldbeslightmovement
betweenthem;somefriction/resistanceisacceptable.
12.Ifthereisnomovementbetweenthehubrotorand
thecaliperthenbackoffthestandardnutoneturn
fromtheswivelandrepeatstep11
13.Ifthehubrotormovesveryfreelyrelativetothe
caliper,thentightenthestandardnutoneturn
againsttheswivelandrepeatstep
11
14.Oncestep11isachieved,holdthethreadedrod
endwithatoolandtightenthelocknutagainstthe
standardnut.DoNotallowthecabletoturnwhen
thenutsaretightened.
15.Closethedrivewheelreleasevalve.RefertoUsing
theDriveWheelValvesinOperation.
16.Repeatontheoppositesideofthemachine.
17.Installthereartiresandtorquethelugnutsto90-95
ft-lb(122-129N-m).
18.Removejackstands.
Figure74
LeftHandBrakeShown
1.Cableanchor
6.Locknut
2.Threadedrod7.Pullcablethreadedrod
thisdirection
3.Pushleverthisdirection8.Holdthreadedrodhere
4.Caliperleverarm9.Swivel(pivothead)
5.Standardnut(shown
againstswivel)
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